Article
Green & Sustainable Science & Technology
Chihe Sun, Yun Hu, Fubao Sun, Yahui Sun, Guojie Song, Haixing Chang, Siriporn Lunprom
Summary: The study prepared a heterogeneous cobalt doping Zn/Al complex oxide catalyst by a simple birch-templating method and successfully applied it to the transesterification of jatropha oil with methanol, achieving a high biodiesel yield. The crystalline particles from the templating method were uniformly distributed on the catalyst surface, forming a well-defined tiled network with large amounts of grain-free pores.
Article
Engineering, Environmental
Adeyinka Sikiru Yusuff, Afeez Olayinka Gbadamosi, Lekan Taofeek Popoola
Summary: This study developed a new eco-friendly solid catalyst from anthill-zinc modification for methanolysis of low-grade feedstock to produce biodiesel. The optimized conditions for the reaction resulted in a high biodiesel yield of 83.16%, showing good agreement with the predicted value. The catalyst exhibited better stability after being regenerated and reused for six cycles, indicating its potential for economical biofuel production from waste products.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Youness Bouhaj, Said Sair, Hanane Ait Ousaleh, Othmane Amadine, Houda Maati, Mohamed Zahouily, Abdessamad Faik, Abdeslam El Bouari
Summary: This study aims to develop a composite solid catalyst with enhanced efficiency, reusability, and reduced environmental impact for biodiesel production. Eco-friendly and reusable composite solid catalysts were designed by impregnating different amounts of zinc aluminate into a zeolite matrix. The catalyst containing 15 wt% ZnAl2O4 showed the highest conversion activity of FAME of 99% under optimized reaction conditions and maintained good catalytic activity even after five cycles. The findings of this study could significantly impact the commercial production of biodiesel by offering an efficient and environmentally friendly reusable catalyst, ultimately reducing the cost of biodiesel production.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Energy & Fuels
Ali Sarosh Khawaja, Muhammad Ayman Zaheer, Ali Ahmad, Asif Ali Mirani, Zulfiqar Ali
Summary: Factors such as higher fuel prices, limited fossil fuel resources, and the negative impact of fossil fuels on global warming have made the search for an unconventional sustainable energy source necessary. Biodiesel has gained attention due to its similar properties to fossil fuels and its synthesis from edible and non-edible oils. The heterogeneous catalyst calcium oxide has shown potential for sustainable biodiesel production due to its abundance, low cost, and high activity. Nanotechnology can further improve the catalytic activity of calcium oxide, making it a promising catalyst for biodiesel production.
Article
Green & Sustainable Science & Technology
Marko Racar, Ivana Soljic Jerdic, Zoran Glasovac, Ante Jukic
Summary: In this study, ten guanidine derivatives were investigated as catalysts for biodiesel production. The most active catalyst was selected and process optimization was conducted using a design of experiments and response surface methodology. The resulting optimal conditions were verified and the obtained biodiesel was characterized for its physicochemical and application properties.
Article
Energy & Fuels
Warisara Woranuch, Kanokwan Ngaosuwan, Worapon Kiatkittipong, Doonyapong Wongsawaeng, Weerinda Appamana, Jon Powell, Samuel Lalthazuala Rokhum, Suttichai Assabumrungrat
Summary: In recent years, attention has been focused on the use of heterogeneous catalysts, with CaO powder being considered a promising catalyst for biodiesel production. Through investigation of catalyst pellet fabrication parameters, it was found that using an Al2O3 binder resulted in higher catalytic activity compared to kaolin and diatomite supported catalysts. The CaO to Al2O3 mass ratio significantly affected surface area and total basicity, with the CaO-A(800)-3.5:1 catalyst showing the highest biodiesel yield due to the presence of multiple active crystal phases.
Review
Agricultural Engineering
Shamala Gowri Krishnan, Fei-ling Pua, Fan Zhang
Summary: Biodiesel, produced through transesterification or esterification reactions, has the potential to replace fossil fuels. However, challenges with commercial homogeneous catalysts include difficulties in separation, wastewater discharge, and formation of undesirable by-products. The use of heterogeneous magnetic catalysts has gained attention due to their simpler separation and higher recovery rates. Further research is needed to utilize waste materials as support for the synthesis of these catalysts to create a more sustainable biodiesel industry.
BIOMASS & BIOENERGY
(2021)
Article
Energy & Fuels
Ozlem Bedir, Tuba Hatice Dogan
Summary: In this study, biodiesel was successfully synthesized using a promising catalyst derived from sugar industry waste, with an optimized reaction condition yielding high biodiesel production rates meeting quality standards. The results suggest that utilizing this catalyst from sugar industry waste could reduce the production cost of biodiesel.
Article
Engineering, Environmental
Nijad Ishak, Jane Estephane, Eliane Dahdah, Lena Moussa Chalouhi, Salim Nassreddine, Bilal El Khoury, Samer Aouad
Summary: In this study, a highly efficient biodiesel catalyst was prepared by impregnating KOH on fumed silica followed by calcination, with the 30% KOH/FS catalyst showing the best performance. Optimum conditions for biodiesel production over this catalyst were identified, leading to a final FAME yield of 99.9%. The catalyst showed slight deactivation after 3 consecutive runs, but coating the catalyst with biodiesel improved its stability, maintaining a maximum FAME yield of 99.9% over multiple runs. The properties of the produced biodiesel met ASTM requirements, demonstrating the catalyst's potential for industrial application in transesterification of waste cooking oil.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Yilin Ning, Shengli Niu, Yongzheng Wang, Jianli Zhao, Chunmei Lu
Summary: This study reported the one-pot synthesis of a promising, cheap, and green heterogeneous nanocatalyst for biodiesel production, which showed excellent catalytic performance with a biodiesel yield of 99.15%. By using a neural network, the optimal reaction parameters were predicted accurately, demonstrating the high efficiency and accuracy of the model.
Article
Energy & Fuels
Salima M. Salim, Raja Izriq, Mahdi M. Almaky, Aisha A. Al-Abbassi
Summary: In this study, stable zinc oxide powder with nanoparticle morphology was successfully synthesized under sol-gel conditions. The catalytic activity of ZnO nanoparticles in biodiesel production from sunflower oil was evaluated, and optimal reaction conditions were determined. The composition and physical and chemical properties of the synthetic biodiesel were analyzed using various characterization techniques and compared against international standards.
Review
Green & Sustainable Science & Technology
Sajad Tamjidi, Hossein Esmaeili, Bahareh Kamyab Moghadas
Summary: The challenge of replacing fossil fuels with new energy sources is being addressed by exploring biodiesel as an alternative, although its relatively high cost compared to conventional diesel remains an issue. The use of magnetic catalysts shows promise in reducing production costs and promoting the large-scale synthesis of biodiesel.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
David Chaos-Hernandez, Hilda Elizabeth Reynel-Avila, Didilia Ileana Mendoza-Castillo, Adrian Bonilla-Petriciolet, Ismael Alejandro Aguayo-Villarreal
Summary: This study optimized the pyrolysis, functionalization, and activation of coconut endocarp-based catalysts for transesterification to produce FAME. Results showed that thermal activation improved catalyst properties, leading to high FAME formation. Physicochemical characterization explained the performance of these catalysts, suggesting their potential as a low-cost alternative for biodiesel production.
Article
Environmental Sciences
Elamathi Vimali, Sathaiah Gunaseelan, Venkatachalam Chitra Devi, Sengottian Mothil, Muthu Arumugam, Balasubramaniem Ashokkumar, Innasi Muthu Ganesh Moorthy, Arivalagan Pugazhendhi, Perumal Varalakshmi
Summary: This study explores the use of marine brown macroalga as a sustainable feedstock for the production of biofuels and other bioproducts. The researchers successfully extracted lipids and algal oil from the macroalgae and produced biodiesel through transesterification using TiO2 as a catalyst. The study also examined the quality parameters of the biofuels, which met international fuel standards.
Article
Energy & Fuels
Maliheh Mahloujifar, Mohammadreza Mansournia
Summary: Utilizing orthorhombic phase KAlSiO4 and alkali metals-impregnated samples as catalysts can enhance the catalytic activity in the transesterification of sesame oil to biodiesel. Characterization analysis and optimization of experimental conditions revealed that the use of alkali metal impregnation method significantly increased the catalytic activity of KAlSiO4.
Article
Chemistry, Multidisciplinary
Kim Larmier, Celine Chizallet, Sylvie Maury, Nicolas Cadran, Johnny Abboud, Anne-Felicie Lamic-Humblot, Eric Marceau, Helene Lauron-Pernot
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2017)
Article
Microscopy
K. Dembele, S. Moldovan, Ch. Hirlimann, J. Harmel, K. Soulantica, P. Serp, B. Chaudret, A. -S. Gay, S. Maury, A. Berliet, A. Fecant, O. Ersen
JOURNAL OF MICROSCOPY
(2018)
Article
Chemistry, Multidisciplinary
Justine Harmel, Laurent Peres, Marta Estrader, Adrien Berliet, Sylvie Maury, Antoine Fecant, Bruno Chaudret, Philippe Serp, Katerina Soulantica
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2018)
Article
Chemistry, Physical
Justine Harmel, Adrien Berliet, Kassioge Dembele, Cecile Marcelot, Anne-Sophie Gay, Ovidiu Ersen, Sylvie Maury, Antoine Fecant, Bruno Chaudret, Philippe Serp, Katerina Soulantica
Article
Chemistry, Physical
Z. Buniazet, C. Lorentz, A. Cabiac, S. Maury, S. Loridant
MOLECULAR CATALYSIS
(2018)
Article
Chemistry, Physical
Z. Buniazet, A. Cabiac, S. Maury, D. Bianch, S. Loridant
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Engineering, Chemical
Gerhard D. Pirngruber, Sylvie Maury, Antoine Daudin, Pierre Y. Alspektor, Christophe Bouchy, Emmanuelle Guillon
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Z. Buniazet, J. Couble, S. Maury, A. Cabiac, S. Loridant, D. Bianchi
Article
Chemistry, Physical
Kassioge Dembele, Mounib Bahri, Charles Hirlimann, Simona Moldovan, Adrien Berliet, Sylvie Maury, Anne-Sophie Gay, Ovidiu Ersen
Summary: TEM was used to study the evolution of supported Co nanoparticles during reduction and operation in the Fischer-Tropsch synthesis reaction. It was found that cobalt catalysts supported on silica were easier to reduce compared to those supported on alumina. The stability of particle shape during catalyst operation under syngas was noted, along with systematic analysis of the main gas products of the reaction. Operando TEM was shown to be beneficial for studying the dynamic evolution of catalysts at the nanoparticle level under operation conditions.
Article
Chemistry, Physical
Paul Hazemann, Dominique Decottignies, Sylvie Maury, Severine Humbert, Frederic C. Meunier, Yves Schuurman
Summary: The study showed that carburization is one of the potential mechanisms responsible for deselection in Fischer-Tropsch cobalt catalysts. After accelerated aging treatments, a significant loss of both activity and selectivity was observed, mainly due to the impact of carburization phenomena. The extent of carburization directly dictates the level of selectivity shift in the catalyst.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Stijn Van Daele, Delphine Minoux, Nikolai Nesterenko, Sylvie Maury, Vincent Coupard, Valentin Valtchev, Arnaud Travert, Jean-Pierre Gilson
Summary: The study investigated the high selectivity of FER zeolites in converting isobutanol directly into linear butenes. It also highlighted the role of external acid sites in relation to n-butene selectivity and the adverse effect of internal Brunsted acidity on catalyst stability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Paul Hazemann, Dominique Decottignies, Sylvie Maury, Severine Humbert, Frederic C. Meunier, Yves Schuurman
Summary: Polymeric carbon was deposited on Siralox supported cobalt catalysts through ethylene treatment, leading to species similar to those formed during Fischer-Tropsch synthesis. The ethylene treated catalysts showed lower activity, attributed to the loss of CO adsorption sites, which also resulted in decreased heavy products selectivity and increased methane selectivity.
JOURNAL OF CATALYSIS
(2021)
Article
Engineering, Chemical
Paul Hazemann, Jean-Marc Schweitzer, Dominique Decottignies, Sylvie Maury, Severine Humbert, Yves Schuurman
Summary: Recent models accurately predict the initial activity and selectivity of Fischer-Tropsch synthesis catalysts, but often overlook the performance loss over time and particularly the decline in heavy product selectivity. This study proposes a deactivation model at the micro-kinetic scale to represent the effect of carburization on catalyst performance.
Article
Chemistry, Physical
Paul Hazemann, Dominique Decottignies, Sylvie Maury, Severine Humbert, Adrien Berliet, Cecile Daniel, Yves Schuurman
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Koen Kennes, Coralie Demaret, Jordi Van Loon, Alexey V. Kubarev, Guillaume Fleury, Michel Sliwa, Olivier Delpoux, Sylvie Maury, Bogdan Harbuzaru, Maarten B. J. Roeffaers
Article
Chemistry, Physical
Ming-Yi Chen, Ngoc Thanh Thuy Tran, Ahmed Abubakar Alao, Wen-Dung Hsu
Summary: This study demonstrates the significance of surface Pt atom arrangement for the efficiency of ORR in PEMFCs and reveals the correlation between Pt-Pt average distance and O2 dissociation barrier. Furthermore, the study discovers a robust correlation between the level of the catalyst's d-band center and O2 adsorption energy. High-entropy alloy substrates provide potential for controlling Pt arrangement and O2 dissociation barrier.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Eduardo C. Atayde Jr, Babasaheb M. Matsagar, Yu-Cheng Wang, Kevin C. -W. Wu
Summary: This study presents the first application of an acidic MOF, Sulfated MOF-808, in catalyzing the HAA reactions of furan oligomers for the production of biofuel precursors. The catalyst showed high yield, selectivity, and recyclability, making it versatile for different starting materials.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Maria do Carmo Rangel, Francieli Martins Mayer, Soraia Jesus de Oliveira, Sergio Gustavo Marchetti, Fabricio Luiz Faita, Doris Ruiz, Giovanni Saboia, Mariana Kieling Dagostini, Jonder Morais, Maria do Carmo Martins Alves
Summary: This study developed a new catalyst by investigating the effect of magnesium on the catalytic properties of hematite in ethylbenzene dehydrogenation. The catalyst showed important differences in activity, selectivity, and stability, making it a promising candidate for commercial applications.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yanjun Li, Qian Wang, Hui Tian, Mingyuan Zhu, Yuanyuan Liu
Summary: A novel strategy using microwave-assisted precipitation was proposed to prepare defective CsH3PMo11VO40 catalyst for the oxidation of methacrolein to methacrylic acid. Microwave treatment accelerates crystallization, increases vanadyl species content, and forms defective Keggin structures, thereby enhancing the oxidation capacity of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Rajeshwari Athavale, Sailee Gardi, Fatima Choudhary, Dayanand Patil, Nandkishor Chandan, Paresh More
Summary: In this study, a novel acidic ionic liquid catalyst was prepared and used for the synthesis of bis-indolyl methane derivatives. The catalyst exhibited short reaction times, easy purification, and reusability.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Masatomo Hattori, Takato Hattori, Masakuni Ozawa
Summary: Cu-added gamma-Al2O3 catalysts were prepared with varying Cu loadings and the effects of copper oxidation states on catalytic activity were investigated. The results showed that the addition of copper increased the catalyst activity, but excessive copper loading decreased catalytic activity. XRD and TEM analysis indicated the formation of a solid solution of copper oxide species on the surface of gamma-Al2O3. XAS and TPR data demonstrated variations in copper oxidation states among the catalysts.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liwei Fang, Shiyang Niu, Shengsen Wang, Yiqing Lu, Yuanhui Cheng
Summary: In this study, PtNi alloy on nitrogen-doped carbon and SnO2 dual-support was designed to modulate the metal-support interaction, resulting in improved catalytic activity and stability for oxygen reduction reaction. The SnO2/PtNi/NC catalyst exhibited a strongly coupled interface, enhanced electron transfer, and higher half-wave potential compared to PtNi/NC and commercial Pt/C.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Shohei Harada, Duanxing Li, Kenta Iyoki, Masaru Ogura
Summary: This study investigates the catalytic performance of a composite catalyst composed of ZnZrOX and H-zeolite for the hydrogenation of CO2. The deactivation of the composite catalyst is influenced by ion exchange of Zn2+ and/or coke, with their effects differing based on the zeolite structure. Separating the grains of the composite catalyst can prevent deactivation.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Laura Proano, Christopher W. Jones
Summary: In this study, NiGa alloy particles supported on CeO2, ZrO2, and ZrO2-CeO2 solid solutions were prepared and characterized. The nature of the support was found to have a significant influence on the catalyst's activity and selectivity, with the crystalline structure of ZrO2 having the greatest impact. Pure ZrO2 showed the highest methanol selectivity and CO2 conversion at high Zr:Ce ratios. In equimolar and Ce-rich conditions, basic sites and oxygen vacancies were found to be the key parameters affecting methanol production.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Liyan Zhang, Yinze Yang, Leilei Zhou, Fengyu Zhao, Haiyang Cheng
Summary: 1,6-Hexamethylenediamine was successfully synthesized via the reductive amination of 1,6-hexanediol using a Ru/PRL(x)-Al2O3 catalyst. The highly dispersed and anchored Ru species, formed by 1,10-phenanthroline (PRL), played a crucial role in the catalytic reaction. The formation of new acid-base pairs, electron deficient Ru species, and smaller nanoparticles contributed to the improved catalytic performances of the Ru/PRL-Al2O3 catalyst.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Anita Horvath, Miklos Nemeth, Andrea Beck, Gyorgy Safran, Valeria La Parola, Leonarda Francesca Liotta, Gregor Zerjav, Matevz Roskaric, Albin Pintar
Summary: This study investigates the catalytic and structural changes caused by the addition of 0.25 wt% indium in a 3% Ni/CeO2-Al2O3 catalyst prepared by impregnation method. The results show that the addition of indium can decrease the activity of the catalyst, but it improves its stability and reduces coking.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Ankush Kularkar, Vaibhav Vilas Khedekar, Sachin D. Chaudhari, Mudavath Ravi, Sadhana S. Rayalu, Penumaka Nagababu
Summary: Efficiently addressing the challenges of photocatalytic CO2 reduction to CH3OH is crucial. This study developed Zn-BTC MOF and its composites with CaIn2S4, achieving highly efficient and robust photocatalytic CO2 reduction to CH3OH under ambient conditions, using H2O2 as the hydrogen source. Among the composites, ZMCIS4 demonstrated excellent performance with a CH3OH evolution of 49100 μmol/g.cat and a quantum efficiency of approximately 78.41%. The enhanced performance was attributed to the production of nascent hydrogen atoms (H center dot) through the photo-splitting of H2O2 on the ZMCIS surface.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Dan Liu, Yudong Li, Chengyu Wang, Haiyue Yang, Rong Wang, Shujun Li, Xiaohui Yang
Summary: In this study, a self-supporting three-dimensional porous Co3O4 nanobelt array decorated on nickel foam (P-Co3O4 -NBA@NF) electrode with numerous active sites was successfully constructed for the oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-furan dicarboxylic acid (FDCA). The P-Co3O4 -NBA@NF electrode demonstrated high conversion efficiency, selectivity, and Faraday efficiency, as well as remarkable long-term stability. This research provides a promising electrocatalyst for biomass conversion.
APPLIED CATALYSIS A-GENERAL
(2024)
Article
Chemistry, Physical
Yimin Li, Enggah Kurniawan, Fumiya Sato, Takayoshi Hara, Yasuhiro Yamada, Satoshi Sato
Summary: In this study, several silica-alumina catalysts modified with Ag were examined for the dehydration of 1,3-butanediol to 1,3-butadiene. Among them, an amorphous silica-alumina catalyst (SAL-3) modified with Ag showed the highest improvement in catalytic activity and stability when operated in H2 flow. The generation of reversible acid sites was found to be the reason behind the enhanced activity and stability of this Ag/SAL-3 catalyst. The effects of various parameters on the catalytic activity of Ag/SAL-3, such as reaction temperature, contact time, Ag content, and carrier gas, were investigated.
APPLIED CATALYSIS A-GENERAL
(2024)